It has always been the way of the divine Power to send that prophet who was needed at the time. When a venerable life was needed there was Jacob, in whom everything was so worthy of veneration that all bowed before him. At a time when music was deeply felt and admired David came; gifted with a beautiful voice and playing the harp, he gave his message in songs. In this way every prophet came in the guise that the people of the age could understand. At first, however, the people's intelligence would not be sufficiently developed for this, and their self was too much before their eyes. The prophets had renewed their own self, and that is why they were prophets. When the self is before the eyes of the soul, then the soul is blinded.